Method and device for detecting sealing property of seal bearing

Abstract

The invention relates to a device and a method for detecting sealing property of a sealed bearing. An upper sealed mould hermetically contacts an inner ring and an outer ring on one end face of a bearing to be detected, and the upper sealed mould is provided with an upper sealed air vent communicating the end face of the bearing; a lower sealed mould hermetically contacts an inner ring and an outer ring on the other end face of the bearing to be detected, and the lower sealed mould is provided with a lower sealed air vent communicating the end face of the bearing; and the upper air vent is connected with compressed air, and the lower air vent is connected with a sensor which is connected with an information control processing device. The device has the advantages of simple structure, convenient detection means and accurate result. When the upper sealed mould is connected with a power driving mechanism, the device achieves semiautomatic detection. A sealed gasket makes seal of the inner ring and the outer ring on the end face of the bearing more reliable. A positioning mandrel ensures that detection of the bearing is quicker and installation of the bearing accurate. Under the control of the information control processing device, the device matched with other auxiliary devices, and can achieve automatic detection.

Description

technical field [0001] The invention relates to bearing performance testing, in particular to a sealing performance testing device for a sealed bearing and a testing method using the device. Background technique [0002] The rapid development of industrialization makes the use of sealed bearings more and more extensive, and puts forward higher requirements for the reliability of the sealing performance of sealed bearings. In view of the unstable sealing effect of sealed bearings with light contact seals used in medium and high speed speeds in my country, there is an urgent need for a sealing performance testing device and testing method for sealed bearings that can detect quickly, have high detection accuracy, and can realize automatic testing. [0003] In the existing sealing performance testing, there is a manual way to test the sealing performance by inflating the sealing part of the bearing and then submerging the bearing in water to observe whether there are air bubbles...

AI Technical Summary

Problems solved by technology

[0003] In the existing sealing performance testing, there is a manual way to test the sealing performance by inflating the sealing part of the bearing and then submerging the bearing in water to observe whether there are air bubbles. Rust treatment, can not be quantitatively analyzed for leakage; there is a method of heating the bearing in a high-temperature box to 100 ℃, place it for 1 hour, take it out, put it in water at room temperature after weighing, take out the bearing after 1 minute, wipe the outside of the bearing dry and weigh again The test process is cumbersome and takes a long time to determine the sealing performance of the bearing by the weight difference between the front and back. The bearings after the test should be dried and cleaned in time, so it can only be used as a type test in the process of product trial production, and batch testing cannot be realized.

[0004] Chinese Invention Patent Publication No. CN 101135606A "Sealed Bearing Multifunctional Testing Machine and Its Test Method" discloses a detection technology, which adopts the method of weighing the grease leakage test bearing first, and then putting it into the grease leakage temperature rise performance test head part , preset load, after the preset time is reached, judge the grease leakage performance of the bearing according to the amount of grease leakage; put the tested bearing into the dust-proof performance test head part with a dust-proof box, then load the dust medium, and drive the dust-proof box For the motor, after the preset time is reached, the dust-proof performance of the bearing is judged according to the count of dust particles. This is to indirectly check the sealing performance of the bearing by checking the amount of dust. It is one of the methods of bearing type testing. The technology disclosed in this invention patent still exists. The device is complex, the means are cumbersome, the cycle is long, and the shortcomings of inability to realize on-line detection at the production site

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